Machine for grading patterns.



No. 897,555. PATENTED SEPT.'1',1908.

A. r. PRESTON.

MACHINE FOR GRADING PATTERNS.

APPLIOATION FILED 00T.26, 1901.

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PATENTED SEPT. 1, 1908. A. F. PRESTON. MACHINE PORGRADING PATTERNS.

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APPLICATION FILED 00126, 1907.

No. 897,555. PATBNTED SEPT. 1, 1908.

A. F. PRESTON. MACHINE FOR GRADING PATTERNS.

APPLICATION FILED 00126, 1907.

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' A. P. PRESTON.

MACHINE FOR GRADING PATTERNS.

APPLICATION FILED 00126, 1907.

4 SHEETS-SHEET 4.

ALBERT F. PRESTON, OF BOSTON, MASSACHUSETTS.

MACHINE FOR GRADING PATTERNS.

Specification of Letters Patent.

Patented Sept. 1, 1908.

Application filed October 26, 1907. Serial No. 399,250.

To all whom it may concern:

Be it known that I, ALBERT F. PRESTON, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Machines for Grading Patterns, of which the following is a specification.

This invention has for its object to provide a simple and effective machine for grading patterns, such as those used for parts of boot and shoe up ers, etc., and for producing on a stock sheet mm which an enlarged or a reduced fac-simile of a given pattern is to be made, an outline which, while difiering in area from the area of the pattern, has the same relative proportions.

An important object of my invention is to enable the same pattern to be used in the production of either enlarged or reduced facsimiles thereof.

Other objects of the invention are to enable the pattern to be at all times fully exposed to view above the marking mechanism, to enable the stock which is being marked, to be located directly under the pattern, instead of at one side of the same, and at a distance therefrom, to enable the guiding edge of the attern and the line described by the operatmg tool, to be always in close proximity to each other, thus reducing lost motion to the minimum, and to utilize one pattern for rading either upwardly toproduce lar er ac-similes, or downwardly to produce smafier fac-similes.

The invention consists in the improvements which I will now proceed to describe and claim:

Of the accompanying drawings, forming a part of this specification, Figure 1 represents a top plan view of a pattern grading machine embodying my invention. Figs. 2 and 3 represent elevations of the same, taken from different sides of the machine. Fig. 4 represents a partial side elevation from another point of view. Fig. 5 represents a section on line 55 of Fig. 1. Fig. 6 represents a section on line 66 of Fig. 4. Fig. 7 represents a section on line 7-7 of Fig. 4. Fig. 8 represents a fragmentary elevation, partl in section. Fi 9 represents a sectional e evation of part 0 the structure shown in Fig. 8, the section being on line 99 of Fig. 10. Fig. 1.0 represents a fragmentary top plan view. Fig. 11 represents a section on line 99 of Fig. 10, showing a different adaptation.

Fig. 12 represents an enlargement of a portion of Fig. 1, the pattern and the pattern clamp being removed. Fig. 13 represents a horizontal section of the system shown in Fig. 12. Fig. 14 represents a differently graduated scale plate.

The same letters of reference indicate the same parts in all the figures.

In the drawings, 12 represents a bed adapted to support a stock sheet 13, from which patterns are to be out, said sheet being, for example, stiff and heavy aperboard, such as that used for boot and s we patterns.

14 represents a goosoneck arm, which is attached to the bed, and overhan s the same, said arm having an internally-t readed socket 15,- engaging an operating screw 16. To the lower end of said screw is jointed a clamp member 17, which is connected with the screw in such manner that the screw may rotate while the clamp member is fixed by its engagement with the pattern 18.

19 represents a complemental clamp member which is supported in any suitable way above the bed, preferably by the ends of a pin or cross bar 20 inserted in a vertical post or shank 21, to which is attached a clamping or presser foot 22, adapted to bear on the stock sheet 13. The clamp member 17 is adapted to slide vertically on the shank 21, and is moved toward and from the bottom clamp member 19 by adjustments of the screw 16. When the screw is turned downwardly, the pattern 18 is clamped rigidly between the members 17 and 19, so that the pattern is held practically immovable above the bed, and separated from the latter by an intermediate space in which the adjustin mechanism hereinafter described, is adapte to move.

It will be seen that when the screw 16 is turned downwardly, the downward pressure exerted on the upper clamp member 17, is communicated through the attern, the lower clamp member 19 and tlie shank 21, to the clamping foot 22, so that the screw 16 serves to apply clamping pressure both to the pattern and to the stock sheet. The clamp member 17 is adjustably connected with the shank 21 by means of a screw 170 having a conical inner end enterin a conical socket 171 in the shank, provision being thus made for holding a pattern of any desired thickness between the members 17 and 19.

23 (Fig. 13) represents a guide having an ear 24 which surrounds and is adapted to rotate freely on the shank 21 between the clamp member 19 and the clamping foot 22. 25 represents a slide which is preferably a with a traveler 28, which is adapte' .to bear against the edge of the pattern 18, the other carrier being rovided with an operating tool 29 adapted to bear on the stock sheet 13, said operating tool being preferably adapted to score or groove the stock sheet, and thus describe an outline, the shape of which is determined by the outline of the pattern. The traveler 28 and the operating tool are interchangeable from carrier to carrier; that is to say, the traveler may be applied to the inner carrier 26, and the operating tool to the outer carrier 27, as shown in Figs. 8 and 9, when the machine is used for grading up, or in other words, describing on the stock sheet an outline of greater area than the pattern. On the other hand, the operating tool may be mounted on the inner carrier 26 and the traveler onthe outer carrier 27, as shown in Fig. 11, when the machine is used for rading down or describing on the pattern sheet an outline of smaller size than the pattern. The traveler is preferably mounted in a holder 30 having dowel pins 31 and 32 adapted to engage sockets 33 34 formed for their reception in the carriers 26 and 27. The operating tool is preferably provided with a bent shank 35, adapted to e inserted in a socket 36 formed in each of the carriers.

It will be seen from the foregoing and by reference to Figs. 9 and 11 that in one case the operating tool is located outside the edge of the pattern, while in the other case the operating tool is located under the pattern.

In oglerating' the machine, the operator grasps andles or enlargements 37 on the slide 25, and presses the traveler against the ed e of the pattern, the lon itudmal movabllity of the slide enabling t e pattern and the operating tool to be moved radially toward and from the center of rotation of the guide 23, in which the slide moves.

Pantographic mechanism is provided which is actuated by longitudinal movements of the slide, for varying the distance 1 between the carriers, the arrangementbeing such that the distance between the operating tool and the center of rotation of the guide, is

lyl lindrical rod movable freely lengthwise in automatically varied by movements of the traveler along the edge of the pattern, so that the operating tool is caused to describe an outline on the stock sheet varying in area from the pattern, but having the same relative proportions. When the traveler is bearing on a portion of the pattern at the maximum distance from the center of rotation of the guide, the operating tool. has a maximum separation from the traveler. When the traveler is bearing upon a portion of the pat tern at a minimum distance from the center of rotation, the operating tool is at a minimum distance from the traveler. Provision is therefore made for the preservation of the same relative proportions between the pattern and the outline described by the operat ing tool on the stock sheet. The said pantographic mechanism in this embodiment of my invention is constructed as follows: 38 represents an inner pantograph arm jointed at 39 to the guide 23. 40 represents an. outer pantograph arm jointed at 41 to the sliding outer carrier 27, the two arms 38 and 40 being jointed together at their outer ends at 42. 43 represents a guide member which is mounted to turn on the outer arm 40, said member being preferably a post having a horizontal orifice in which a finger 44 rigidly secured to the fixed carrier 26, is ada ted to slide. The relative arrangement of t c said parts, including the arms 38 and 40 and the guide member 43 and finger 44, is such that any change in the angular relation between the arms 38 and 40 will cause the sliding carrier 27 to move toward or from the fixed carrier 26, consequently when the arms are opened at a wide angle, such as would be caused b the bearing of the traveler on a art of t e pattern at a maximum distance rom the center, the two carriers would be separated by a maximum distance, and when the angle of the arms 38 and 40 becomes more acute by the movement of the traveler toward the center of rotation, the distance be tween the two carriers decreases. The parts are so proportioned that this change in. the distance between the two carriers or between the traveler carried by one carrier and. the operating tool carried by the other carrier, causes the operating tool to describe a figure on the stock sheet which, while varying in area from the pattern, has the same relative proportions.

To vary the initial distance between the traveler and the operating tool, and thus determine the extent to which the pattern is to be graded up or down, I mount the guide member, or post 43 on a slide 46 which is movable longitudinally on the outer arm 40, and when adjusted, causes a change in the distance between the traveler and the operating tool. The slide 46 is rovided with a nut 47, which is engaged y an adjusting screw 48 mounted. to rotate in a bearing 49 carried by the arm 40. The rotation of the screw moves the nut 47, slide 46 and post 43 toward and. from the inner end of the arm 40. A scale is provided, consisting of a graduated plate 50 affixed to the arm 40, and a pointer 51 affixed to the nut 47.

The traveler 28 is adapted to oscillate on its holder 30 so that its bearing edge or side which is in contact with. the pattern, is ad apted to swing outwardly from the cen ter of the attern, as indicated in Figs. 8 and 9, and adust itself to the edge of the pattern, the arrangement being such that the bearing edge of the traveler is substantially in vertical alinement with the operating tool when the latter is in the position shown in dotted lines in Fig. 9. Provision is thus made for locating the tool practically in line with the edge of the pattern when this is desirable.

The bed 12, the foot or stock clamping member 22, and the pattern clamping members 17 and 19, are provided with faeings 52 (Fig. 8) of frictional material, such as emery cloth, to enable said parts to firmly hold the stock sheet and the pattern. V

The scale plate 50 is preferably detachable from the arm 40', so that different plates may be used interchangeably, the arm being provided with studs 53 which engage recesses 54 (Fig. 14) in the ends of the scale plate. In Fig. '12 I show a scale for regular grading upward or downward from the pattern when the proportions of the outline on the stock sheet are to be the same as those ofthe pattern without exception, the plate having two graduations reading progressively from one end to the other, said scale having two columns of graduations 55 and 56, one for grading up and the other for grading down. It is often desirable, however, to vary the propertions of the outline on the pattern sheet at one or more parts without varying the proportions at other parts. For example, it may be desirable to extend or shorten one end of the outline or to make a curved edge fuller or less full to vary the width of overlap. To enable these variations or exceptions to be made conveniently and accurately, I provide a scale plate such as that shown in Fig. 14, said plate having the two columns of graduations 55 and 56, like those shown in Fig. 12, and being intended for regular grading, while the other has additional columns 57 and 58 adapted for use in grading with exceptions. The scale plate when engaged with the studs 53 may be held down against the arm 40 by the pointer 51 or any other suitable means.

It will be seen that the pattern is supported above the pattern sheet, and overhangs the latter, the sheet and pattern being separated by a working space which accommodates parts of the mechanism. Said space enables the operating-tool to project to any desired distance under the pattern in grading down, so that the same-pattern may be used for grading either up or down. Owing to the close proximity which always exists between the traveler and the operating tool, lost motion or backlash of the operating tool is reduced to the minimum with a ecu-responding reduction of liability to waste the pattern material and produce a distorted. or imperfeet outline. In grading up, the operating tool is outside the edge of the pattern, and forms an. outline which surrounds the pattern.

The screw 48, slide 46 and the parts cooperating therewith, constitute manually-0perated means for varying the initial radial distance between the tool and the carrier. The arms 38 and 40, the sliding member 43 and the linger 44 affixed to the slide 25, constitute automatic pantographic means governed by radial movements of the traveler for proportionally varying the radial distance between the traveler and the operating tool.

I claim:

1. A pattern grading machine, comprising a pattern, means for holding the pattern elevated above the stock to be marked, and separated from the latter by a working space, a traveler movable progressively around the pattern, and radially toward and from a point within the area of said pattern, a single operating tool mounted to move with the traveler and also mounted to move radially toward and from the traveler, one of the parts, termed respectively the traveler and operating tool, being located in said space, and automatic means governed by radial movements of the traveler for proportionally varying the radial distance between the traveler and the tool.

2. A pattern grading machine, comprising a pattern, means for holding the pattern elevated above the stock to be marked, and

- separated from the latterby a working space,

a traveler movable progressively around the pattern, and radially toward and from a point within the area of said pattern, a sin le operating tool mounted to move with t e traveler and also mounted to move radially toward and from the traveler, one of the parts, termed respectively the traveler and operating tool, being located in said space, automatic means governed by radial movements of the traveler for proportionally varying the radial distance between the traveler-and. the tool, said means permitting the initial radial distance between the traveler and tool to be manually varied.

3. A pattern grading machine, comprising a pattern, means for holding the pattern above the stock to be marked, and separated from the latter by a working space, a traveler movable progressively around thepattern, and radially toward and from a point within the area of said pattern, a single operating tool mounted to move with the traveler, and also mounted to move radially toward and from the traveler, one of the parts, termed respectively the traveler and operat ing tool, being located in said space, carriers for said traveler and tool, means for supporting and guiding said carriers, said means including a movable member to which one of the carriers is aflixed and on which the other carrier is movable, and automatic means governed. by movements of the said member for varying the distance between said carriers.

4. In a pattern grading machine, in combination, a pattern and means for holding it elevated above the pattern stock, and separated from the latter by a working space, and grading mechanism. cooperating with the pattern, and including a single operating tool and a traveler, one of the parts, termed respectively the traveler and operating tool, being located. in said space, said parts being interchangeable with each other to permit grading either upwardly or downwardly from the pattern.

5. In a pattern grading machine, in combination, a pattern and means for holding it elevated above the pattern stock, and separated from the latter by a working space, and grading mechanism, including a single operating tool, adapted to move in said space radiall toward and from a point within the area 0 said pattern, and means cooperating with said tool to cause the latter to mark on the pattern sheet a proportional outline of greater area than the pattern and surroundmg the same.

6. In a pattern grading machine, in combination, a pattern and means for holding it elevated above the pattern stock, and separated from the latter by a working space, and grading mechanism, including a single operating tool adapted to move in said working space radially toward and from a point within the area of said pattern, and means cooperating with said tool to cause the latter to mark on the pattern stock a proportional outline of lesser area than the pattern and wholly under the same.

7 In a pattern grading machine, in combination, a pattern and means for holding it elevated above the pattern stock, and separated from the latter by a working space, and grading mechanism, including a traveler, a carrier therefor, a single operating tool, one of the parts, termed respectively the traveler and operating tool, being located in said space and movable radially toward and from a point within the area of said pattern, and automatic means governed by movements of the traveler to vary the distance between the traveler and the tool, the traveler being mounted to oscillate on its carrier to render its bearing edge self ad on a pattern sheet a proportional outline varying in area from the pattern, and means for determining the variation of said outline from the pattern, said means including one of a plurality of graduated scales adapted to be interchangeably affixed to one member of the pantographic mechanism, and a pointer movable on said member and cooperating with the scale.

9. In a pattern grading machine, in combination, a pattern, pantographic grading mechanism having provisions for marking on a pattern sheet a proportional outline varying in area from the pattern, andmeans for determining the variation of said outline from the pattern, said means including one of a plurality of graduated scales having means for removably engaging complemental engaging devices carried by one member of the pantographic mechanism whereby either of said scales may be removably connected to said member, and a pointer movable on said member and cooperating with the scale carried by said member.

10. In a pattern grading machine, in combination, a pattern, means for holding it above the stock to be marked, and separated from the latter by a working space, a single operating tool adjacent to the traveler, and mounted to move therewith, one of the parts, termed respectively the traveler and operating tool, being located in said space, jointed inner and outer pantographicarms, a fixed support about which the inner arm is revoluble, connections between the outer arm and the traveler and operating tool having provisions for varying the distance between the traveler and tool, manually-operated means carried by the outer arm whereby the initial distance between the traveler and tool may be varied, and a scale also carried by the outer arm for indicating the said initial distance.

11. In a pattern grading machine, in combination, a pattern, means for holding it above the stock'to be marked, and separated from the latter b a working space, a single operating tool a jacent to the traveler and mounted to move therewith, one of the parts termed respectively the traveler and operating tool being located in said space, jointed inner and outer antographic arms, a fixed sup ort about wiiich the inner arm is revolub e, connections between the outer arm and the traveler and operating tool, having provisions for varying the distance between the 12. A pattern grading machine, comprising stock clamping means, pattern clamping means overhanging the stock-clam ing means, a rotatable guide, a slide movab e in said uide, a pair of carriers one fixed upon the s ide and the other slidable thereon, one carrier having a pattern-engaging traveler and the other a stock-engaging tool, and mechanism actuated by longitudinal movements of the slide for varying the distance between the carriers, whereby the distance between the operating tool and the center of rotation of the guide is automatically varied to describe on the stock. an outline varying in area from the pattern, but having the same relative proportions.

13. A pattern grading machine compris-.

ing a bed, a stock-clamping foot movable toward and from the bed, a pattern clamp located above the foot, a rotatable guide be tween the foot and clamp, a slide movable in said guide, outer and inner carriers mounted on the slide, one afiixed to the slide and the other slidable thereon, one of said carriers having a traveler movable along the edge of a pattern held by the pattern clamp, while the other carrier has an operating tool adapted to bear on the stock sheet, and mechanism actuated by longitudinal movements of the slide for varying the distance between the carriers.

14. A pattern grading machine comprising stock-clam ing means, pattern clamp-- ing means over anging the stock-clam ing means, and separated from the latter y a working space, a rotatable guide engaged with the clamping means, a slide movable in said guide, a pair of carriers one fixed upon the slide and the other slidable thereon, one carrier having a pattern-engaging traveler and the other a stock-engaging tool, one of the parts, termed res ectively the traveler and operating tool, eing located in said space, and mechanism actuated by longitudinal movements of the slide for varying the distance between the carriers, said mechanism having provisions for varying the initial distance between the carriers to determine the diflerence in area between the pattern and the outline described by the operating tool.

15. A pattern grading machine comprising a bed, a stock-clam ing foot movable toward and from the be a pattern clamp located above the foot, a rotatable guide between the foot and clamp, a slide movable in said guide, outer and inner carriers mounted on the slide, one affixed to the slide and the other slidable thereon, one of said carriers having a traveler movable along the edge of a pattern held by the pattern clamp, while the other carrier has an operating tool adapted to bear on the stock sheet, an inner arm jointed to the guide, an outer arm jointed to the slidable carrier, said arms being jointed together at their outer ends, and connections between the outer arm and the fixed carrier, whereby changes in the angular relation of the arms are caused to vary the distance between the carriers.

16. A pattern grading machine comprising a bed, a sunk-clamping foot movable toward and from the bed, a pattern clamp located above the foot, a rotatable guide between the foot and clamp, a slide movable in said guide, outer and inner carriers mounted on the slide, one aflixed to the slide and the other slidable thereon, one of said carriers having a traveler movable along the edge of a pattern held by the pattern clamp, while the other carrier has an operating tool adapted to bear on the stock sheet, an inner arm jointed to the guide, an outer arm jointed to the slidable carrier, said. arms being jointed together at their outer ends, a guide member mounted to turn on the outer arm, and a finger rigidly attached to the fixed carrier, and slidably engaged with said guide member, the said guide member and linger cooperating in varying the distance between the carriers when the angular relation of the arms is varied.

17. A pattern grading machine comprising a bed, a stock-clamping foot movable toward and from the bed, a pattern clamp located above the foot, a rotatable guide between the foot and clamp, a slide movable in said guide, outer and inner carriers mounted on the slide, one affixed to the slide and the other slidable thereon, one of said carriers having a traveler movable along the edge of a pattern held by the pattern clamp, while the other carrier has an operating tool adapted to bear on the stock sheet, an inner arm jointed to the guide, an outer arm jointed to the slidable carrier, said arms being jointed together at their outer ends, a guide member mounted to turn on the outer arm, a finger rigidly attached to the fixed carrier, and slidably engaged with said guide member, and means for adjusting the guide member longitudinally on the outer arm.

18. A pattern grading machine, comprising a bed having a frictional face, a stock clamping member cooperating therewith,

attern clamping members located above the ed, said members being rovided with frictional faces, and means or simultaneously raising and lowering the said clamping members.

19. A )attorn grading machine, com rising a bed, a stock clamping member a ove the bed, pattern clamping members above the stock clamping member, and means for simultaneously raising and lowering said members.

20. A attern grading machine, com llS- ing a be( a stock clamping member a ove the bed, pattern clamping members above the stock clamping member, an arm rigidly attached to and overhanging the bed, and an 0 erating screw engaged with said arm and c amping members, and adapted to raise and lower the clamping members simultaneously.

21. A pattern grading machine, comprising means for supporting a stock sheet and a patterneside by slcle, with the pattern overanging the stock sheet, and separated therefrom by a working space, a traveler bearing on the edge of the pattern, a single operating tool adjacent to the traveler, one of the parts, termed respectively the traveler and operating tool, being located in said space and movf able radially toward and from a point within the area of said pattern, and automatic means for proportionally varying the radial distance between the traveler and tool.

22. A pattern grading machine, comprising means for supporting a stock sheet and a ALBERT F.. PRESTON.

Witnesses:

(J. F. BRowN, P. W. PEZZETTI. 

